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Re: fans on victors
From my experience in designing a motor drive from scratch (Tech-Ed Independent study), power MOSFETS become warm and sometimes hot under normal operation. I was using 40A mosfets connected to a small RC car motor (24 turns) and they would heat up under normal operation. I therefore assume that the Victors use MOSFETS for their bridge (since thats what you use unless you use relays and that there are 12 mysterious TO-220 cases on there) and that therefore they would require some sort of cooling. I would consider it an error in judgement to run a victor without a fan since I have never seen a motor controller that did not have some form of heat dissipator, not to mention that the Victor does not have a heatsink unlike most industrial and commercial motor drivers.
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